Practice Respiratory System RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Biology question set covers important concepts related to the human respiratory system, respiratory organs, breathing and the exchange of gases.
The questions cover important areas such as the nose, nasal cavity, pharynx, larynx, trachea, bronchi, lungs, alveoli, diaphragm, breathing mechanism, inhalation and exhalation, exchange of oxygen and carbon dioxide, and cellular respiration. These concepts are important for General Science and Biology preparation for Railway examinations.
Start practicing Respiratory System RRB PYQs with answers and explanations and strengthen your Railway Biology preparation.
11
Where in a human body can anaerobic respiration take place?
RRB Group-D
30/09/2022 (Shift-II)
2022
✓ Answer:CIn the cytoplasm of cells
Anaerobic glycolysis and lactate formation occur in the cytoplasm, not in mitochondria.
12
The full form of ATP is _____.
RRB Group-D
27/09/2022 (Shift-II)
2022
✓ Answer:CAdenosine Triphosphate
ATP stands for adenosine triphosphate. It is an energy-carrying molecule used in cellular processes.
13
During the process of respiration, how many oxygen molecules combine with one molecule of glucose?
RRB Group-D
08/09/2022 (Shift-II)
2022
✓ Answer:CSix
The overall aerobic respiration equation is C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy. Thus six oxygen molecules are used per glucose molecule.
14
Which of the following are the three-carbon molecules formed during respiration?
RRB Group-D
27/09/2022 (Shift-III)
2022
✓ Answer:CLactic acid and pyruvate
Pyruvate and lactic acid each contain three carbon atoms. Ethanol contains two carbon atoms.
15
Which of the following statements is FALSE?
RRB Group-D
17/08/2022 (Shift-III)
2022
✓ Answer:BIn the mitochondria, acetic acid is broken down utilising oxygen.
The intended mitochondrial substrate is pyruvate, which is converted into acetyl-CoA and further oxidised. The source statement naming acetic acid is incorrect in this context.
16
In which cell organelle does the first step of cellular respiration, forming a three-carbon molecule called pyruvate, take place?
RRB Group-D
27/09/2022 (Shift-I)
2022
✓ Answer:CCytoplasm
Glycolysis occurs in the cytosol of the cytoplasm and breaks one glucose molecule into two pyruvate molecules. The source loosely calls the cytoplasm an organelle.
17
What part of the respiratory system prevents the air passage from collapsing?
RRB Group-D
17/08/2022 (Shift-I)
2022
✓ Answer:BRings of cartilage
Cartilage rings support the trachea and keep its lumen open during breathing.
18
Which of the following statements is INCORRECT?
RRB Group-D
14/09/2022 (Shift-II)
2022
✓ Answer:CThe respiratory pigment is present in the white blood corpuscles.
Haemoglobin, the human respiratory pigment, is found in red blood corpuscles, not white blood corpuscles.
19
Which of the following ensures that the air passage does NOT collapse during respiration?
RRB Group-D
27/09/2022 (Shift-I)
2022
✓ Answer:DRings of cartilage
The cartilage rings of the trachea prevent collapse while allowing some flexibility.
20
Which of the following statements is correct with reference to aerobic respiration?
RRB Group-D
12/09/2022 (Shift-I)
2022
✓ Answer:BIn mitochondria, one molecule of pyruvate breaks down to give three molecules of carbon dioxide.
Complete oxidation of one three-carbon pyruvate molecule produces three carbon dioxide molecules through pyruvate oxidation and the citric acid cycle. Aerobic respiration requires oxygen.
Each question includes the correct answer and a clear explanation, helping you understand the concept behind the answer and revise important Biology topics effectively. Practising Respiratory System Previous Year Questions can also help you become familiar with the types of Biology questions asked in RRB examinations.
Whether you are preparing for RRB NTPC Respiratory System PYQ, RRB Group D Respiratory System PYQ, RRB JE Respiratory System PYQ, RRB ALP Respiratory System PYQ, or RRB Technician Respiratory System PYQ, practice these previous year questions regularly to strengthen your Biology preparation.
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